chore: prepare release 0.16.0 (#957)

This PR was created by Knope. Merging it will create a new release

### Breaking Changes

#### Don't delete changesets for prereleases

Previously, using `PrepareRelease` to create a prerelease (for example,
with `--prerelease-label`) would delete all
changesets, just like a full release. This was a bug, but the fix is a
breaking change if you were
relying on that behavior.

### Features

#### Add a `shell` variable for `Command` steps

You can now add `shell=true` to a `Command` step to run the command in
the current shell.
This lets you opt in to the pre-0.15.0 behavior.

```toml
[[workflows.steps]]
type = "Command"
command = "echo $AN_ENV_VAR"
shell = true
```

Co-authored-by: GitHub <[email protected]>

Author: dbanty

.changeset/add_a_shell_variable_for_command_steps.md

@@ -10,6 +10,30 @@ The results are changes to the current directory, calls to external commands, an
 Notably, anything written to standard output or standard error
 (what you see in the terminal) is _not_ considered part of the public API and may change between any versions.
 
+## 0.16.0 (2024-03-20)
+
+### Breaking Changes
+
+#### Don't delete changesets for prereleases
+
+Previously, using `PrepareRelease` to create a prerelease (for example, with `--prerelease-label`) would delete all
+changesets, just like a full release. This was a bug, but the fix is a breaking change if you were
+relying on that behavior.
+
+### Features
+
+#### Add a `shell` variable for `Command` steps
+
+You can now add `shell=true` to a `Command` step to run the command in the current shell.
+This lets you opt in to the pre-0.15.0 behavior.
+
+```toml
+[[workflows.steps]]
+type = "Command"
+command = "echo $AN_ENV_VAR"
+shell = true
+```
+
 ## 0.15.0 (2024-03-18)
 
 ### Breaking Changes

.changeset/dont_delete_changesets_for_prereleases.md

@@ -1,7 +1,7 @@
 [package]
 name = "knope"
 description = "A command line tool for automating common development tasks"
-version = "0.15.0"
+version = "0.16.0"
 authors = ["Dylan Anthony <[email protected]>"]
 edition = "2021"
 license = "MIT"